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README.md: add notes to understand what is done by which file

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Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
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Denys Vlasenko 2023-04-28 15:56:49 +02:00
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# kernel-srpm-macros
The kernel-srpm-macros package
This source package results in two "binary" packages, kernel-rpm-macros
and kernel-srpm-macros. The role and locations of files is as follows:
kernel-srpm-macros:
/usr/lib/rpm/fileattrs/kmod.attr
For /lib/modules/XYZ/modules.builtin and .../MODULE.ko.XYZ
specifies a Lua script to generate kmod(MODULE.ko)
"Provides:" deps
/usr/lib/rpm/macros.d/macros.kernel-srpm
?
kernel-rpm-macros:
/usr/lib/rpm/redhat/brp-kmod-restore-perms
?
/usr/lib/rpm/redhat/brp-kmod-set-exec-bit
?
/usr/lib/rpm/redhat/find-provides.ksyms
Runs from rpmbuild at the end of kernel builds and 3rd party module
builds, to extract
kernel(SYMBOL)=0xHASH "Provides:" deps from modules in kernel packages,
and ksym(SYMBOL)=0xHASH for 3rd party modules.
Takes input list of files on stdin.
/usr/lib/rpm/fileattrs/provided_ksyms.attr
For newer rpmbuild with "internal dependency generators",
this file specifies that find-provides.ksyms should be run
only on .ko.XYZ files
(with "external dependency generators", the script needs to
filter out the files by itself).
/usr/lib/rpm/redhat/find-requires.ksyms
?
/usr/lib/rpm/fileattrs/required_ksyms.attr
For newer rpmbuild with "internal dependency generators",
this file specifies that find-requires.ksyms should be run
only on .ko.XYZ files, and not for /lib/modules/XYZ/kernel/*
(IOW: only for building 3rd-party modules)
/usr/lib/rpm/redhat/find-provides.d/modalias.prov
Runs from rpmbuild at the end of kernel builds and 3rd party module
builds, to extract
modalias(pci:SOMETHING)=OPTIONALLY_VERSION "Provides:" deps from modules
in kernel and 3rd party modules packages.
Takes input list of files on stdin.
/usr/lib/rpm/fileattrs/modalias.attr
For newer rpmbuild with "internal dependency generators",
this file specifies that modalias.prov should be run
only on .ko.XYZ files
/usr/lib/rpm/redhat/find-provides.d/firmware.prov
?
/usr/lib/rpm/kabi.sh
Runs from rpmbuild at the end of kernel build to extract
kernel(SYMBOL)=0xHASH "Provides:" deps.
/usr/lib/rpm/fileattrs/kabi.attr
For newer rpmbuild with "internal dependency generators",
this file specifies that kabi.sh should be run on
/boot/symvers-* and /lib/modules/XYZ/symvers).gz
/usr/lib/rpm/macros.d/macros.kmp
?
/usr/lib/rpm/redhat/kmodtool
?
/usr/lib/rpm/redhat/rpmsort
?
/usr/lib/rpm/redhat/symset-table
?